Study subjects will have the following collected: Lavender tri-potassium EDTA tubes filled according to the manufacturer's specifications [approximately 4ML of venous blood], labeled, and promptly dispatched to the laboratory.The sample will be gently inverted several times prior to analysis on the ADVIA 120 taking care not to overly agitate the sample. Moreover, the specimen shall be inspected for clot formation prior to being assayed. The full blood count shall be obtained and in the configuration sub-menu the extended platelet parameter option shall be selected and thus actuated. A print out will be generated including the MPC, MPM, platelet component distribution width, platelet mass distribution width, and large platelet count in addition to the standard platelet count and mean platelet volume [MPV].